Improvement in railway-signals



UNITED STATES PATENT OFFICE. A

JOHN nynoss, or HAMILTON, CANADA.

|MPRovEMENT IN RAlLwAvslGNALs.

Specification forming part of Letters Patent N o. 142,944, dated September 16, 1873; application led May e, 1872.

To all choi it may concern Be it known that I, J oHN FoRsTER Ross, of the city of Hamilton, in the county `of VVentWorth, in the Province of Ontario, Ganada, have inventeda certain Improvement in Railway-Signals, of whichl the following is a specification r)The object of the invention is to render the working of railway-signals more simple and effectual than any heretofore used.

Reference being had to the annexed drawings, it will be seen that Figure 1 is a View of a railway-signal, which consists of a platform, A, to which is secured a metal box, F, and

tube C. Passing through the said tube is ashaft, B, for holding the signal-disk L at the bottom, and pivoting a lantern, containing red and green glass, on its upper extremity. 0n

the lower side of the tube C is cut a spiral-y shaped slot, D, as shown, and secured tothe upright shaftB is a small friction-roller, E, on a pin or button projecting from the shaft, which Works in the said spiral slot D, as will be more fully explained hereafter. The shaft B has a stationary grooved pulley, J, attached to it inside ofthe box F. A chain or cord,-H, is secured to the shaft B, winding around the grooved pulley. The opposite end of the chain or cord is conducted to the inside of an oiice and secured.

andsecured in an oflice. The si gnal-disk then onlypreseuts a thin edge to the track.

The advantages of my device are, first, its extreme simplicity 5 second, all Weights, springs, and other clumsy gearing now in use are avoided, and the signals Worked by the simplestvmecbanical contrivance; third, o u account of its simplicity, there is no possibility of anything getting out of order; fourth, it is adapted to s\vitches,lamps, semaphores, and all kinds of signals.

I claim- The combination ofv the'platform A, box F, tube C, having the spiral slot D, and shaft B, having a pin or button bearing the roller E, with lamp, and disk, or either of them, of sufficient Weight to carry down said shaft, as and for the purpose specified. JOHN FORSTER BOSS. Signed in the presence off W. BRUCE, WM. B. ADAMS. 

